linux-kernel - Re: [PATCH] CFS: Fix missing digit off in wmult table

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 17 Jul 2007 05:20:28 +0200 (CEST)
From:	Roman Zippel <zippel@...ux-m68k.org>
To:	Ingo Molnar <mingo@...e.hu>
cc:	Matt Mackall <mpm@...enic.com>, James Bruce <bruce@...rew.cmu.edu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Mike Galbraith <efault@....de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...radead.org>,
	Chris Wright <chrisw@...s-sol.org>
Subject: Re: [PATCH] CFS: Fix missing digit off in wmult table

Hi,

On Tue, 17 Jul 2007, I wrote:

> Playing around with some other nice levels, confirms the theory that 
> something is a little off, so I'm quite correct at saying that the ratio 
> _should_ be 1:10.

Rechecking everything there was actually a small error in my test program, 
so the ratio should be at 1:20. Sorry about that mistake.
Nice level 19 shows the largest artifacts, as that level only gets a 
single tick, so the ratio is often 1:HZ/10 (except for 1000HZ where it's 
5:100). Nevertheless it's still true that in general nice levels were 
independent of HZ (that's all I wanted to say a couple of mails ago).

Ingo, you can start now gloating, but contrary to you I have no problems 
with admitting mistakes and apologizing for them. The point is just that 
I'm reacting better to factual arguments instead of flames (and I think 
it's not just me), so I'm pretty sure I'm still correct about this:

> OTOH you are the one who is wrong about me (again). :-(

bye, Roman
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/